GROUND REINFORCING METHOD USING RECYCLED PLASTIC PILE, AND COMPOSITE FOUNDATION

摘要

PROBLEM TO BE SOLVED: To provide a ground reinforcing method using recycled plastic piles that can make effective use of resources and acquire required bearing power without uselessly increasing or enlarging piles.;SOLUTION: The piles 1 are allowed to penetrate the ground 9 to reinforce the ground 9 and to construct a composite foundation 3 that obtains bearing power with both the piles 1 and a spread foundation 2. The pile 1 is made of solid recycled plastic. The long-term ground contact pressure N of the foundation is determined, and the long-term allowable bearing unit capacity q_ra of the reinforced ground is obtained by an expression q_ra=(1/3)[q_d-1.6(P_d/A)]. A load foundation area A per pile in which a relationship between the long-term allowable bearing unit capacity q_ra and long-term ground contact pressure N satisfies N≤q_ra, and pile ultimate bearing power P_d are determined. The composite foundation 3 satisfying the determined load foundation area A and pile ultimate bearing power P_d is constructed.;COPYRIGHT: (C)2010,JPO&INPIT